Improvement in malt-polishing apparatus



v SK/Mumie@ W. W. STOLL.

Malt-Polishing Apparatus.

N0.145,027. Patented Nov.25,l873.

Sig. f\.

Km) mmv.

l *UNITED STATES PATENT OFFICE;

VILLIAM Y. STOLL, OF BROOKLYN, NEV YORK.

IMPROVEMENT IN' MALT-POLISHING APPARATUS.

Specification forming part of Letters Patent No. 145,027, dated November 25, 1873; application tiled November 10, 1873.

To all whom it may concern:

Be it known that I, VILLIAM W. S'roLL,

of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Apparatus for Polishing Malt and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing forming a part of thi specication, in which drawing- Figure l represents a vertical central section of this invention. Fig. 2 is a horizontal section of the same.

Similar letter s indicate corresponding parts.

This invention relates to an apparatus com-` posed principally of a circular chamber, from the inner surface of which project a series of pins, and through the center of which extends a vertical shaft with agitators, so that by impart-ing to said shaft a revolving motion, the malt contained in the circular polishing-chamber is agitated, causing the grains to rub against each other, whereby the impurities adhering to the same are readily disengaged. The polishing-chamber is provided with a feedopening above, and with a discharge-spout below, and in the discharge-spout is an adjustable gate, so that by increasing or decreasing the area of said discharge-spout, the period of time for which the malt is exposed to the polishing process can be shortened or f lengthened.

rlhe friction-pins of the polishing-chamber are inserted from the outside, and they are provided with square heads, so that they can be readily removed or re-inserted, and that said pins, if they should work loose, cannot drop into the chamber and mix with the malt contained therein. The agitatmg-pins of the vertical shaft are provided with inclined surfaces, whereby their effect is increased. A raised flange and a protecting-cap prevent the malt from discharging at the sides of the vertical shaft.

In the drawing, the letter A designates a circular or cylindrical chamber, through the center of lwhich extends a vertical shaft, B. In the top of said chamber is a feed-opening, a., and on its bottom is a discharge-spout, b, which is provided with a gate, c, tha-t can be promote the friction of the individual grains of malt against each other. Said frictionpins are screwed in from the outside, and in order to increase their hold the chamber is provided with ribs or strengthening-strips e. Each of said pins is provided with a head on its outer end, so that the same cannot be screwed in beyond the shoulder formed beneath this head, and that, if one of the pins should work loose, it is not liable to drop into the interior of the chamber, where it would endan ger the safety of the apparatus and its contents. From the shaft B project a series of agitating-pins, j',

' which work between the friction-pins d. 4These agitating-pins are, by preference, made inclined, as shown, so that their effect is 'Increased, and that the grains receive a rising and fallingmotion, causing them to rub against each other, so as to disengage the-,impurities adhering to their surfaces. From the bottom of the chamber A rises a circular flange, g, and on the shaft B is secured a cap, h, which projects down over said flange, so that the grains are prevented from passing out at the sides of the shaft B.

By means of this apparatus malt can be readily and quickly freed from all impurities adhering to the grains without injuring its quality or breaking the grains.

Vhat I claim as new, vand desire to secure by Letters Patent, is-

l. The combination of an adjustable discharge-spout with the feed-opening in the chamber A containing friction-pms d and agitating-pins f, which act Aupon the malt in said chamber, said spout serving to retain the in-` dividual grains for a longer or shorter period in the polishing-chamber, substantially as described.

2. The friction-pins d, provided with heads on their outer ends, and secured in the sides This specification signed by me this 5th day of thepolshiug-chamber from the outside, subof Nowf'ember, 1873. sta-ntially as set forth.

` .f7 f f T 3. The protecting-cap 7L and circular zmge ILLIAM W' STOLL' g,i11 combination with the shaft B and With the Vitnesses: polshingchamber A, substantially as shown W. HAUFF,

and described. CHAS. VAI-ILERS. 

